Display Fibonacci series

#include <iostream> 
using namespace std; 
int main() { 
int n1=0,n2=1,n3,i,number; 
cout<<"Enter the number of elements: "; 
cin>>number; 
cout<<n1<<" "<<n2<<" "; //printing 0 and 1 
for(i=2;i<number;++i) //loop starts from 2 because 0 and 1 are already printed 
{ 
n3=n1+n2; 
cout<<n3<<" "; 
n1=n2; 
n2=n3; 
} 
return 0; 
} 
 
OUTPUT:
Enter the number of elements: 10
0 1 1 2 3 5 8 13 21 34 
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